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Show Record would carry it around the rapids as we carried our provisions. In the Grand Canyon we did this even with our heavy boats. I con- 100 sider the heavier boats better for such expeditions. At high water a stout boat is needed in going through these rapids and 101 whirlpools. There now remain old dredges and mine dumps, with shaft, poles, etc., and other evidences of former mining operations on the Colorado River, but I saw no work being carried on. 102- 103 The following exhibits were offered in evidence: Exhibit No. 51, a book entitled " The Exploration of the Colorado River of the West and its Tributaries, Explored in 1869, 1870, 1871 and 1872, under the Direction of the Secretary of the Smith-sonian Institution," by J. W. Powell; Exhibit No. 52, a book en-titled " Report of the Lands of the Arid Region of the United States, with a More Detailed Account of the Lands of Utah," with maps, by J. W. Powell; Exhibit No. 53, a chart entitled, " Rain Chart of the United States," by Charles A. Schott; and Exhibit No. 54, one of the maps included in Major Powell's book entitled " Department of the Interior, Map of Utah Territory, 1878." Arthur A. Baker testified for complainant on direct examination as follows: 105 I am a geologist with the United States Geological Survey and as such made an examination of lands in and about the Colorado and San Juan Rivers in the summers of 1926, 1927 and 1928, spending five or six months during each of those years on 106 lands in the vicinity of those rivers. Exhibit No. 55 is a report 107 on the conditions I found there. I have mapped in detail on this exhibit the country east of the Colorado from Castle Creek down to the junction of the Green and Colorado, my examination covering roughly about 1000 square miles. Subsequently there was an area map from the 110th meridian west between the San Juan River and Utah- Arizona line, comprising between 108 800 and 1000 square miles. The territory mapped by me from Moab - 15- |